Dual Network card Load balancing with VLAN

Posted on 2011-03-09
Last Modified: 2012-05-11
Hi I'm trying to cluster 2 windows 2008 web servers
I have 3 2008 servers one is the load balancing managemnt server and Domain controller the other 2 are web servers

I have 2 VLANS configured on the switch
I installed the newrk load balanciong manager on the three servers
I used the domain controller to set up and manage the load balancing
The problem is how does a pc not a member of the vlan connect to the cluster to access a site running on the cluster as the two servers can see each other and are allocated virtual ip addresses.

I know this question is long winded but are they any guides that show how to configure a load balancing vlan.
Question by:wjmorrow
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 3
  • 3

Expert Comment

ID: 35084195
Different ip ranges and subnets for devices on the seperate vlans too?
LVL 42

Expert Comment

ID: 35084414
If you are using Windows network load balancing the servers participating in the load balancing need two network cards each, and they share a virtual IP address and a Ethernet MAC address between them. As long as they are connected to the same VLAN and you configured the network load balancing you shouldn't need to do anything else on the network side.

Author Comment

ID: 35085384
thanks, How do you access the servers from outside the VLAN using the clusters IP address I thought that the second network card with the virtual IP addresses was only for private clustering based newtork traffic The clustered newtork card has three IP addresses the cluster shared IP Address and 2 other virtual IP addresses. I just want to know how to access the cluster from the other interface card.
Do I have to enable bridging or something?
Best Practices: Disaster Recovery Testing

Besides backup, any IT division should have a disaster recovery plan. You will find a few tips below relating to the development of such a plan and to what issues one should pay special attention in the course of backup planning.

LVL 42

Expert Comment

ID: 35086055
You just access the virtual IP. To try it, point your web browser at the virtual IP address. Shut down one of the nodes, it should still work. Power back on the node and shut down the other one. The web site should still work. I believe that the virtual IP will register in DNS, but you can create an A record in DNS if you need a different name.

Author Comment

ID: 35087015
the virtual ip address is mapped to the network card in the two port vlan. when i plug the network cards into the same vlan as the rest of the computers I can ping the virtual IP Address and connect to the servers so maybe you don't put the clustered adapters in a vlan of there own?

Author Comment

ID: 35087273
This link seems interesting

I have both the network cards configured on the same ip address range of dhcp of the domain controller and they are all on the same subnet, Do i have to set up a gateway address on the clustering cards
LVL 42

Accepted Solution

kevinhsieh earned 500 total points
ID: 35087470
A quick scan indicates that the documentation is pretty good. There is no requirement to have a VLAN or any other kind of separate network for wnlb. You can use a hub if you wanted to.

Featured Post

Ransomware-A Revenue Bonanza for Service Providers

Ransomware – malware that gets on your customers’ computers, encrypts their data, and extorts a hefty ransom for the decryption keys – is a surging new threat.  The purpose of this eBook is to educate the reader about ransomware attacks.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

I have put this article together as i needed to get all the information that might be available already into one general document that could be referenced once without searching the Internet for the different pieces. I have had a few issues where…
When you upgrade from Windows 8 to 8.1 or to Windows 10 or if you are like me you are on the Insider Program you may find yourself with many 450MB recovery partitions.  With a traditional disk that may not be a problem but with relatively smaller SS…
In this video, we discuss why the need for additional vertical screen space has become more important in recent years, namely, due to the transition in the marketplace of 4x3 computer screens to 16x9 and 16x10 screens (so-called widescreen format). …
Windows 8 came with a dramatically different user interface known as Metro. Notably missing from that interface was a Start button and Start Menu. Microsoft responded to negative user feedback of the Metro interface, bringing back the Start button a…

733 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question